#!/usr/bin/env python3
# -*- encoding: utf-8 -*-
from __future__ import print_function
import sys
from os import walk
import os
import json
import codecs

from bs4 import BeautifulSoup

from config import ignored_title
from config import domain_mapping
from config import mirror_site_folder
# /data/websites 目录下面有各个博客站点的目录：
# csrd.aliapp.com, www.taobaotest.com， www.tbdata.org

def eprint(*args, **kwargs):
    print(*args, file=sys.stderr, **kwargs)


def get_immediate_subdirectories(a_dir):
    return [(os.path.join(a_dir, name),name) for name in os.listdir(a_dir)
            if os.path.isdir(os.path.join(a_dir, name))]


encodings = ['UTF-8', 'GBK', '8859-1', ]

def links(dirpath, filename, domain_url):
    file = os.path.join(dirpath, filename)

    for encoding in encodings:
        try:
          with codecs.open(file, 'r', encoding=encoding) as input:
            soup = BeautifulSoup(input.read(),"html.parser")
            for tag in soup.find_all('a',href=True):
                if not tag.string or tag.string in ignored_title or '#' in tag.get('href'):
                    continue
                if tag.string and (tag.get('href').startswith(domain_url) or tag.get('href').startswith('/')):
                    link = tag.get('href') if tag.get('href').startswith(domain_url) else (domain_url + tag.get('href'))
                    ## remove multiple line in title:
                    yield (link, tag.string.strip('\r\n\t ').replace('"', ""))
        except Exception as e:
            eprint("# error processing file: {} for encoding: {}".format(file, encoding))
        else:
            break ##  get the correct file encoding



def generate_links_title(directory, domain_url):
    links_title_dict = {}
    for (dirpath, dirnames, filenames) in walk(directory):
        for filename in filenames:
            #print("{} {} {}".format(dirpath, dirnames, filename))
            if filename.endswith("html") or filename.endswith("htm"):
                for (link, title) in links(dirpath, filename, domain_url):
                    links_title_dict[link] = title

    return links_title_dict


if __name__ == "__main__":

    print("urls = {")
    for (directory, domain_name) in get_immediate_subdirectories(mirror_site_folder):
        domain_url = domain_mapping[domain_name]
        dict = generate_links_title(directory, domain_url)
        for (key, val) in dict.items():
            print('"{}" : "{}",'.format(key, val))
    print("}")

    # pretty print json:
    #print("urls = ", end='', flush=True)
    #print(json.dumps(full_links_title_dict, indent=4, sort_keys=True, ensure_ascii=False))